کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6490500 43365 2016 37 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pretreatment of spent sulphite liquor via ultrafiltration and nanofiltration for bio-based succinic acid production
ترجمه فارسی عنوان
پیشگیری از مصرف مشروبات الکلی سولفیت از طریق اولترافیلتراسیون و نانوفیلتراسیون برای تولید اسید بنچربوریک مبتنی بر زیست
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
چکیده انگلیسی
Ultrafiltration and nanofiltration of spent sulphite liquor (SSL) has been employed to evaluate the simultaneous production of lignosulphonates and bio-based succinic acid using the bacterial strains Actinobacillus succinogenes and Basfia succiniciproducens. Ultrafiltration with membranes of 10, 5 and 3 kDa molecular weight cut-off results in significant losses of lignosulphonates (26-50%) in the permeate stream, while nanofiltration using membrane with 500 Da molecular weight cut-off results in high retention yields of lignosulphonates (95.6%) in the retentate stream. Fed-batch bioreactor cultures using permeates from ultrafiltrated SSL resulted in similar succinic acid concentration (27.5 g/L) and productivity (0.4 g/L/h) by both strains. When permeates from nanofiltrated SSL were used, the strain B. succiniciproducens showed the highest succinic acid concentration (33.8 g/L), yield (0.58 g per g of consumed sugars) and productivity (0.48 g/L/h). The nanofiltration of 1 t of thick spent sulphite liquor could lead to the production of 306.3 kg of lignosulphonates and 52.7 kg of succinic acid, whereas the ultrafiltration of 1 t of thick spent sulphite liquor using a 3 kDa membrane could result in the production of 237 kg of lignosulphonates and 71.8 kg of succinic acid when B. succiniproducens is used in both cases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biotechnology - Volume 233, 10 September 2016, Pages 95-105
نویسندگان
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